Semaphore.hpp

Go to the documentation of this file.

// ANNA - Anna is Not Nothingness Anymore                                                         //
//                                                                                                //
// (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
//                                                                                                //
// See project site at http://redmine.teslayout.com/projects/anna-suite                           //
// See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //


#ifndef anna_core_mt_Semaphore_hpp
#define anna_core_mt_Semaphore_hpp

#include <semaphore.h>

#include <anna/core/functions.hpp>
#include <anna/core/RuntimeException.hpp>
#include <anna/core/mt/Safe.hpp>

namespace anna {

//class RuntimeException;

class Semaphore : public Safe {
public:
  // Constructor
  Semaphore(unsigned int count);

  virtual ~Semaphore();

  void wait() noexcept(false);

  bool tryWait() noexcept(false);

  void signal() noexcept(false);

  virtual std::string asString() const ;

protected:
  void lock() noexcept(false) { wait(); }

  void unlock() { signal(); }

private:
  sem_t a_id;
};

} //namespace anna

#endif